Stove



A. HOLMQUISIT.

STOVE. APPLICATION men ocr.13,1921.

' Patehted May 9,1922.

2 SHEETS-SHEET 1.

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STOVE.

APPLICATION FILED 00112 ,1921.

MI Mu ww m m xv w M w m w TE? Fi h AUGUST HOLMQUIST, 01E MONROE, WASHINGTON.

STOVE.

misses.

Application filed October 13, 1921.

i a citizen of the United States of America,

and resident of the city of Monroe, in the county of Snohomish and State of VVashington, have invented certain new and useful Improvements in Stoves, of which the following is a specification.

My invention relates to stoves and particularly to stoves which are designed for heating purposes such as in residences, stores and the like.

The object of my invention is to provide a stove for such uses which will beeconomical in cost of manufacture and efficient in its heating ability, that is, will extract from the fuel a large percentage of the heat generated in its combustion.

Another object of my invention is to provide with such a stove means whereby air may be passed through chambers or passages which are surrounded by the gases of combustion so as to extract from said gases a large percentage of heat contained therein and also to provide means whereby the air employed for such purposes may be thoroughly filtered by the use of apparatus which is cheap in first cost, easily replaced and operates efficiently as a filter.

The features of my invention will be hereinafter described and the novel parts upon which I desire to secure a patent will be particularly defined by the claims terminating; this specification.

The accompanying drawings illustrate my invention in the form of construction which I now prefer to use.

Figure 1 is a vertical section taken upon the central. plane of the stove.

Figure 2 is a section taken on a horizontal plane represented by the broken line 22 of Figure 1.

Figure 3 is a section taken upon the horizontal plane represented by the broken line 33 of Figure 1. I

The main body of the stove as illustrated in the drawings consists of avertical cylinder. This is mounted upon a base 1 supported upon legs 13, but this may in the main be varied as desired. The base has an ash pan 10 and door 11 which. door may be provided with draft openings and means for closing the same after any form of construction found suitable and desired.

"if the stove be designed for wood burning it would not ordinarily be provided with a Specification of Letters Patent.

and the cylinder.

Patented May Q, 1922.

Serial No. 507,455.

grate but if designed for burning coal, or if this be desired for any other reason, it may be provided with a grate, as 12. The particular construction of the grate is immaterial. As illustrated it is shown as being composed of separable members resting upon the flange 20 of a shallow cup-like casting 2 which forms a firepot.

The main body portion of the stove is composed of a cylinder 7, preferably formed of sheet metal of suitable thickness. This is shown as being secured at its lower end to the outer surface of the casting 2. Surrounding this cylinder 7 is a skeleton frame work which at the front side of the stove is made of such shape as to serve as a casino; or frame 21 forming a door opening and to which a door 22 is'secured. At its rear side and. at such other suitable points as desired this frame may consist mainly or wholly of vertical struts or posts 23. The function of these posts is chiefly to form support somewhat more substantial than the plates forming the main cylinder, for the inverted dome or bowl 3 which-forms the upper wall of the fire box.

This inverted dome 3 is a casting which in its main body is of sufliciently less diame-' ter than the diameter of the cylinder to provide an annular gas passage between itself This passage 30 extends entirely about the inverted dome 3 excepting .where it is interrupted by the arms 31 which extend to the cylinder 7 and form spacers and where it 1S interrupted at the rear by the flue 532 which extends to the outer cylinder and forms an air inlet line.

As illustrated this inverted dome 3 is of approximately hemispherical shape. To its upper or open side it has secured a cylinder or drum 4:, also formed of sheet metal, which is spaced from the outer cylinder 7 so as to form an annular flue for the gases to escape.

At the upper end of the cylinder 7 is provided a gas escape opening 33 to which a smoke pipe may be attached. The two drums or cylinders 7 and 4 are connected. at their upper ends.

A casting 5 serving as a support for the air filter and a passage for the air to the dome 3, is secured to the flanges Wlllfjll surround the flue section 32 of said dome. This casting turns downward and has an enlarged downwardly facing bell 50 to which the filtering apparatus is secured. This filtering apparatus is composed of a series of frustums or cones 6, 60, and 61, which. are successively of smaller size and are nested within each other, the successive frustums of cones being placed so as to have their taper extending in opposite directions. These are composed of a filtering fabric, as cloth, of suitable weave and have their upper ends secured to a spider 62 which is secured to the lower edge of the bell 50. A. ring 63 is secured to the lower ends of the two cones 6 and 60 so as to hold them down and a weight ea is placed within the closed end. of the innermost tube 61.

The whole may be enclosed by a cylinder as 65 of sheet metal. This cylinder and the upper spider 62 may be secured to the bottom of the bell in any suitable manner. The manner illustrated for securing this result is to provide the upper end of the shell 65 with a ring 66 to which is secured bolts 6'? pivoted so that they may be swung in vertical planes. with thumb nuts and are designed to enter slots in the flange 51 which terminates the lower edge of the bell 50. The spider 62 has a flange extending outwardly and designed to be clamped between the ring 66 and the flange 51.

The enclosing cylinder or shell 65 preferably extends to near the floor. Within this and below the filtering parts 60, 61, room is provided for the reception of a pan as 68 for the reception of dust which mav fall from the filtering members. Spacing lugs as 69 will hold the pan central. The lower end of the shell 65 may be provided with a door for the convenient placing and removal of the dust pan 68.

I prefer to provide the air inlet passage 5 with an air inlet valve or valves. These as illustrated. consists of a spider ring as 56 which may be secured to the air inlet flue 5, as by screwing into a threaded opening therein, a light disk carried by a central stem 53, about which is a supporting spring 55 and on which is an adjusting nut 541-. If the filtering fabric gets clogged with dust so that the air supply is restricted, the valve 52 will be drawn down to admit air.

The fabric of which the screening or filterin cones are made may be easily removed, cleaned and replaced. Being of a simple type of construction they. may be made by anyone when it becomes necessary to replace them. All the air which is passed through the heating chambers of the stove being passed through this filter, is freed of dust.

To diffuse the entering air in the heating drum 4, I have provided a deflector plate or diffuser, as 8. This is of somewhat less These bolts are provided diameter than the mouth of the dome 3, thus leaving an annular opening surrounding the plate 8. This causes the air to largely pass up adjacent to the wall of the cylinder 4; I also provide this drum with a series of perforations- 81 scattered about its surface through which the air will escape in fine jets.

The upper end of the inner drum t may be left open so that the air heated therein will be discharged directly into the room. If desired, however, pipes may be connected therewith so as to conduct the air to the point where its discharge is desired, in the same manner as employed in connection with hot air furnaces.

By the construction employed the heat of the gases caused by combustion will be more thoroughly extracted and transferred to the air which is discharged into the rooms. The stove it is believed will be more ethcient in its utilization of the heat of the fuel than ordinary stoves. Its type of construction is such that it may be cheaply built and easily repaired. The manner of filtering the air employed will also result in d livering pure air. The filtering device if desired may be connected with a fine or pipe and this connected with the outer air so that all or part of the air employed may be drawn from without the room.

What I claim as my invention is:

1. A stove comprising a vertical cylindrical shell, a firebox at the lower end of said shell, an inverted dome over the firebox and of less diameter than said shell to provide an annular gas flue, said dome having an air supply flue extending horizontally to without the shell, a stem extending centrally upward from said dome and a perforated air distributer plate carried by the upper end of said stem-and of smaller diameter than the dome to leave an annular air passage about it.

2. A heating stove having an enclosed air heating channel, an air filter, and an air passage connecting the filter with the enclosed air heating channel, and having a suction operable valve in its wall between the air filter and the air enclosed heating channel.

3. A stove having a cast base section forming a fire pot, a cast section forming a fuel chamber dome, a wrought metal shell connecting said two cast sections and supporting struts connecting said two cast sections outside of said shell,

Signed at Seattle, King County, Washington, this 7th day of October, 1921.

AUGUST HOLMQUIST. 

